kilpatriok



(Nb Model.)

A 'KILPATRIOK.

APPARATUS FORGASTING PIPE, No, 349,596. Patented Sept. 21, 1886'.

3. COT

N. PETERS. Pholo-Lhhcgnphur. Washington. D. c,

l NITED STATE-s PATENT Fries.

ALEXANDER KILPATRIOK, OF ST. LOUIS, MISSOURI.

APPARATUS FOR CASTING PIPE.

SPECIFICATION forming part of Letters Patent No. 349,596, dated September 21, 1886.

Application filed April 29, 1886. Serial No. 200,604. (No model.) i

To all whom it may concern: termed sectional chi llrings in a flask-bot- 7 Be it known that I, ALEXANDER KILPAT- tom held in a suitable seat, with grooves in [r RICK, of the city of St. Louis, in the State of these sectional rings to form the, bead on the 5 5 Missouri, haveinvented a certain new and usepipe, these rings being made in sections to al- 5 ml Improvement in Apparatus for Casting low their removal from the head after the pipe Gas and Water Pipes and other Long, Heavy is cast. There are objections to this method Castings, of which the following is a full, clear, also, among which is that the rings soon be and exact description, referencebeing had to come destroyed by the hot metal, and, more- Go the accompanying drawings, forming part of over, are liable to become lost, and it requires I this specification, and in which considerable time to handle and put them in Figure 1 is a detail side elevation showing place and clean the sand and dirt out of the the lower part of a double flask with my imgrooves. provement applied. Fig.2 is an edge view of To avoid these difficulties is the object of 6 same. Fig. 3 is an under View of the bottom my invention, and to this end I removably se- 1 5 of the flask. Fig. 4 is a vertical section taken cure in the opening of the flask-bottom seats on line i 4, Fig. 2, showing the lower ends of D, that hold or support rings E, that form the the patterns in place and the rings for formrecesses in the mold to produce the beads on ing the beads in place; and Fig. 5 is a similar the ends of the pipes. I have shown the seats 70 view showing the patterns and rings removed D held in place by means of inclined lugs F and the core inserted and the lower end of the thereon, which are turned to enter beneath pipe. Fig. 6 is a perspective View of one of lugs or cars G on the bottom, as shown in Figs. the bead-rings. Fig. 7 is a perspective view 3 and The inclination of these lugs F is of one of the bead-ring seats removed. shown in Fig. 7, the object being that, as the 75 My invention relates to an improvement in seats are turned from the position shown on theapparatuscs forcasting waterand gas pipes the right-hand side of Fig. 3 to that on the and other long, heavy castings; and myinvenleft-hand side of Fig. 3, the lugs F will ention consists in features of novelty hereinafter gage beneath the lugs G on the bottom, and fully described, and pointed out in the claim. thus securely hold the seats in place. The up- 83 Referring to the drawings, A represents a per or inner surfaces of the seats are preferaflask, which I have shown as double, but which bly recessed slightly at I, as shown in Figs. 4, may be single, if desired, as the part to which 5, and 7 to receive the bead-rings E and hold my invention relates may be used on a single them centrally on the seats. as well as on a double flask. The operation is as follows: Before com- 8 B represents the bottom of the flask, which mencing to ram the flask the seats D are put is secured to the body by means of simple and held in place, as above described, with clamps O, as usual. Any well-known form of the rings E in the recesses I. The patterns J clamp can be used. are then inserted into the flasks, the lower It has heretofore been the practicein mannends of the patterns fitting in the tapering o facturing these pipes or castings, where it is openings of the seats D, as shown in Figs. 4. 4o necessary to form a bead on the lower end, to and 5. The ramming is then commenced, fi-llform the recess of the head in the mold by ing the space L between the pattern and the placing the flasks on what is termed a raminner wall of the flasks with a sand mold, M, ming-stand, with a ring or head on the stand, as shown on right-hand side of Fig. 4. After 5 which forms a recess in themold to produce the ramming has been carried -on for some the bead when the pipe is cast. With this protime, or after it is finished, if desired, the

cess it is necessary to move the flask after the seats D are removed by turning them from mold is formed, in order to remove the ring the position shown on the left-hand side of before the pipe is cast, to permit the bead to Fig. 3 to that on, the right-hand side of same 100 be formed on the pipe, which results in configure, and the bead-rings removed from the siderable labor, loss of time, and cost, resnltseats, when the latter are replaced and turned ing from handling the heavy flasks. Ithas to the positionshown in Fig. 3. The patterns also been common heretofore to place what is J are then removed and the cores N, as shown in Fig. 5, inserted, forming a space between them and the mold to receive the molten metal to form the pipe 0, as shown in Fig. 5. The bead-rings having been removed, a recess is formed in the lower ends of the molds, as shown at P, Fig. 5, and into these recesses runs the molten metal, forming beads on the lower ends of the pipes, as illustrated in said figure. The casting now having been completed, the pipes are removed in the usual manner. It will thus be seen that a perfect bead will be formed upon the lower end of the pipe, and that it is done without moving the flask after the ramming commences, and is also done without the use of sectional or grooved rings.

The seats D are quite light, and can be conveniently removed and replaced to allow the removal of the rings E, and this removal of the seats to get rid of the rings can take place when the mold is only partlymade-say three or four feet high in the bottom of the flaskfor it will then form a perfect resistance to the ramming process, so that the seats may be removed andinserted without stoppage either of the ramming process or process of casting.

Another disadvantage of the use of this means over sectional chill-rings exists in the fact that it is practically impossible to make the sectional rings fit so snugly together, especially after being used a few times, that there will not 'be a sufficient space between the different sections for the molten metal to enter a short distance at least, thus forming upon the bead of the lower end of the pipe sharp fins, which are objectionable, and which are avoided by my improved method.v

I claim as my invention-' The combination of the flask A, bottom B, lugs G on the bottom, seat D, lugs F on the seat, to engage the lugs on the bottom, and bead-ring E, substantially as and for the purpose set forth.

ALEXANDER KILPATRIGK.

In presence of- I GEO; H. KNIGHT, EDW. S. KNIGHT. 

